EP0568106A1 - Filetape autobloquant - Google Patents
Filetape autobloquant Download PDFInfo
- Publication number
- EP0568106A1 EP0568106A1 EP93108231A EP93108231A EP0568106A1 EP 0568106 A1 EP0568106 A1 EP 0568106A1 EP 93108231 A EP93108231 A EP 93108231A EP 93108231 A EP93108231 A EP 93108231A EP 0568106 A1 EP0568106 A1 EP 0568106A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- self
- nut
- locking thread
- thread according
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 7
- 241000500461 Podostemum ceratophyllum Species 0.000 claims 1
- 238000007373 indentation Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 239000013013 elastic material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 13
- 230000005489 elastic deformation Effects 0.000 description 4
- 230000036316 preload Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/30—Locking exclusively by special shape of the screw-thread
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
- Y10S411/924—Coupled nut and bolt
- Y10S411/929—Thread lock
Definitions
- the invention relates to a self-locking thread according to the preamble of the main claim.
- a generic, self-locking thread is z. B. described in DE-26 45 519 C2, which thread is characterized in that the thread base is formed to an inclined ramp to the thread axis and the angle of inclination of the ramp to the thread axis in each case constant 15 to 45 °, preferably 20 to 35 ° is.
- This known arrangement has the disadvantage that a self-locking effect can only be achieved in one screwing direction. In many technical applications, however, it is desirable to be able to lock a nut on both sides of a threaded rod.
- the locking effect with self-locking threads has u. a. their basis in an elastic deformation of the contact surfaces of the thread partners.
- the locking effect is only maintained as long as there is a certain preload.
- the invention is also based on the object of further strengthening and securing the locking effect by designing the contact surface of the nut or bolt, and at the same time compensating for tolerances.
- the tolerance problem can be solved in the smallest of spaces and at the same time achieve an optimal locking effect.
- the inclination must be relatively large, but relatively small in the central area.
- the parts with a large inclination can be straight or curved.
- the part with less inclination is preferably straight.
- the central part has an inclination that is between 15 ° and 30 °, but is preferably 13 °.
- the radial pressure occurring in the self-locking threads can lead to the nut thread expanding radially, so that the locking effect is impaired.
- a radial force is created, and when the nut expands radially, the elastic preload and thus the locking effect are reduced.
- the invention is therefore also based on the object of designing the mother so that expansion of the mother is prevented as far as possible.
- the nut be square on its outside with an odd number of corners, such that the outside has no parallel surfaces.
- the nut has a triangular shape, but also other outer shapes that have no parallel surfaces, such as. B. pentagonal outer shapes have an advantageous effect here.
- the radial expansion of the mother can also be caused by non-elastic or non-compliant materials, e.g. B. on the outside of the mother.
- the jacket can be wrapped around the mother, or extremely stretch-resistant bands or rings can be used.
- the elastic preload can also be achieved by special design of the contact surfaces of the nut or bolt head. As a result, even without maximum tightening, an elastic pretension can be generated and maintained even at a certain distance, which fixes the one thread partner in the locking position.
- This configuration of the contact surface of the nut and bolt acts like a spring with a large restoring force.
- a screw connection is shown with a screw bolt 1, which has an external thread 7.
- This external thread 7 meshes with an internal thread which is arranged in a nut 2a.
- the thread 7 forces the nut 2a towards the screw head of the bolt 1 and thereby presses the two components 10 and 10 to be fixed together 11 firmly on top of each other.
- the nut 2a has bearing surfaces 20 and 21 which are not aligned parallel to the tops of the components 10 and 11, but these bearing surfaces have a curvature such that the actual mother normally only in the outer Border area abuts the component 10.
- the recess or curvature can be conical or concave and have an inclination of 2 ° to 20 °.
- the bolt 1 has a threaded foot 4 and a ridge 5.
- a nut 2 has a ridge 6 and a threaded foot 3.
- Nut 2 clamping ramps 8 and 9 are provided, the exact design of which can be seen more clearly from the illustration in FIG. 3.
- flank areas 11 and 12 are connected to the clamping ramps 8 and 9, and in the embodiment shown in FIG. 2, these flank areas 11 and 12 are not congruent with flank areas 14 and 15 of the bolt 1.
- FIG. 3 shows, the actual clamping ramp z. B. together from three different sections, which are designated in Fig. 2 with B , C and D.
- the ramp section C is the middle area
- the ramp section B is the area closest to the threaded foot 3
- the ramp section D is the area closest to the subsequent flank 11 or 12.
- the ramp sections B , C and D do not have the same inclination with respect to the threaded axis A.
- the ramp section B has an angle ⁇ relative to a line running parallel to the thread axis A , which is, for example, 60 °.
- the ramp section C has an angle ⁇ with respect to a line running parallel to the thread axis A , which is, for example, in an order of magnitude between 5 and 30 °.
- the angle ⁇ is preferably 13 °.
- the ramp section D closes with a an angle .alpha. parallel to the thread axis A , which is also about 60.degree.
- the angles ⁇ and ⁇ can deviate from the aforementioned 60 ° in a size of up to 20 °.
- clamping ramp section C has a smaller inclination than the clamping ramp section B or D.
- section 7 shows a somewhat modified embodiment of the previously explained exemplary embodiment, namely in this illustration only two clamping ramp sections B and C are provided.
- the angle of inclination of section C with respect to the axis of the thread is 13 °, for example, and this angle is shown again as angle ⁇ .
- the ridge 5 is also shown rounded to better follow the practice.
- the dashed representation of section B also shows that section B can also be curved in this embodiment.
- the ramp sections B , C and D are shown in a straight line. However, it is of course also possible that in particular the ramp sections B and D are curved towards the inside of the thread, the ramp section B being convex and the ramp section D being concave. The concave curvature of the ramp section D improves the tolerance conditions between the bolt and the nut.
- the ramp section according to FIG. 7 represents a segment of a circle, and the ramp section C forms the tangent this circle.
- the ramp section B can also be a segment from a parabolic or hyperbolic curve shape.
- a nut 2a is shown, which has a triangular outer shape. This arrangement counteracts the radial expansion of the nut when the corresponding pressure is exerted by the screw bolt.
- a nut 2b which has a pentagonal outer shape, i. H. none of the outer surfaces of the edge of the nut are parallel to another surface.
- Fig. 6 shows a section through a nut 2c.
- This nut consists of an inner part 17 and an outer reinforcing part 16, the reinforcing part 16 being particularly resistant to expansion, while the inner part 17 is more plastic or elastic, so that a plastic or elastic deformation is possible, the prerequisite for the locking principle or that Self-locking principle is.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Bolts, Nuts, And Washers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Connection Of Plates (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US735435 | 1985-05-17 | ||
US07/735,435 US5259715A (en) | 1991-07-25 | 1991-07-25 | Self-locking threaded connection |
EP92111604A EP0524489B1 (fr) | 1991-07-25 | 1992-07-08 | Filetage autobloquant |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92111604.2 Division | 1992-07-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0568106A1 true EP0568106A1 (fr) | 1993-11-03 |
EP0568106B1 EP0568106B1 (fr) | 1995-09-27 |
Family
ID=24955792
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92111604A Expired - Lifetime EP0524489B1 (fr) | 1991-07-25 | 1992-07-08 | Filetage autobloquant |
EP93108231A Expired - Lifetime EP0568106B1 (fr) | 1991-07-25 | 1992-07-08 | Filetape autobloquant |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92111604A Expired - Lifetime EP0524489B1 (fr) | 1991-07-25 | 1992-07-08 | Filetage autobloquant |
Country Status (5)
Country | Link |
---|---|
US (1) | US5259715A (fr) |
EP (2) | EP0524489B1 (fr) |
AT (2) | ATE118604T1 (fr) |
DE (2) | DE59201396D1 (fr) |
ES (2) | ES2079919T3 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5584410A (en) * | 1995-01-24 | 1996-12-17 | Hallen Products Ltd. | Drum closure assembly |
US5860962A (en) * | 1997-12-08 | 1999-01-19 | Becton, Dickinson And Company | Shielded cannula for use with an I.V. site |
US9004318B2 (en) * | 2010-05-31 | 2015-04-14 | Kao Corporation; Daiwa Can Company | Foam dispensing container |
DE102011006702A1 (de) * | 2011-04-04 | 2012-10-04 | Peri Gmbh | Montagestopfen zum Montieren einer Ankerhülse an einer Schalung |
CN102182745A (zh) * | 2011-04-27 | 2011-09-14 | 浙江环达紧固件有限公司 | 自锁紧螺母 |
EP2749370B1 (fr) * | 2011-08-25 | 2016-05-18 | Ricoh Elemex Corporation | Procédé de fabrication de filet de vis et filet de vis |
DE102014220832A1 (de) * | 2014-10-15 | 2016-04-21 | Bayerische Motoren Werke Aktiengesellschaft | Schraubenkopf oder Schraubenmutter |
US11497609B2 (en) | 2019-04-26 | 2022-11-15 | Warsaw Orthopedic, Inc. | Retention system and method |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1903068A1 (de) * | 1968-01-31 | 1970-08-06 | Reed Rolled Thread Die Co | Selbstverriegelnde Schrauben und Gewindeschneider zur Herstellung derselben |
DE1914477A1 (de) * | 1967-04-14 | 1971-01-07 | Burdsall & Ward Co | Gewindeverbindung,insbesondere Sicherungsschraube |
DE2645519A1 (de) * | 1975-10-08 | 1977-04-21 | Holmes Horace D | Selbsthemmendes gewinde |
EP0065344A1 (fr) * | 1981-05-11 | 1982-11-24 | Microdot Inc. | Dispositif de fixation à taraudage |
CH650842A5 (fr) * | 1982-01-11 | 1985-08-15 | Illinois Tool Works | Organe de fixation filete. |
US4586861A (en) * | 1978-11-06 | 1986-05-06 | Microdot Inc. | Convex wedge ramp thread configuration |
EP0441224A1 (fr) * | 1990-02-09 | 1991-08-14 | Anton Prof. Dr. Härle | Taraudage auto-blocant |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1064699A (en) * | 1910-03-14 | 1913-06-17 | Herman Andrew Berns | Corn-sheller cylinder and teeth. |
US1111382A (en) * | 1910-08-13 | 1914-09-22 | Grip Nut Co | Lock-nut. |
US1420725A (en) * | 1921-03-16 | 1922-06-27 | Mattson Julius | Clamping device |
US2246652A (en) * | 1939-09-05 | 1941-06-24 | Wingard Gunnar | Butcher's tool rack |
GB731857A (en) * | 1953-01-21 | 1955-06-15 | Cyril Lorenzo Field | Improvements in or relating to weld nuts or bushes |
GB760297A (en) * | 1953-10-23 | 1956-10-31 | Waterbury Pressed Metal Co | Improvements in or relating to lock nuts |
US2962317A (en) * | 1959-02-04 | 1960-11-29 | Donald L Morse | Magnetic nut |
US3176359A (en) * | 1961-11-20 | 1965-04-06 | William F Ward | Clamping device |
US3266363A (en) * | 1964-04-21 | 1966-08-16 | Elastic Stop Nut Corp | Nuts with load distributing threads |
US3295580A (en) * | 1964-07-06 | 1967-01-03 | Lamson & Sessions Co | Fastener having concave locking fins |
US3378288A (en) * | 1966-02-23 | 1968-04-16 | Kanas Andreas | Blind bolt and method for its use |
US3850215A (en) * | 1971-11-22 | 1974-11-26 | Litton Industrial Products | Self-locking fasteners |
US3823526A (en) * | 1972-09-15 | 1974-07-16 | R Rose | Fastening device |
US3927503A (en) * | 1973-12-26 | 1975-12-23 | Standard Pressed Steel Co | Prevailing torque fastener |
US4171012A (en) * | 1975-11-25 | 1979-10-16 | Holmes Horace D | Locking thread construction |
US4043369A (en) * | 1976-03-11 | 1977-08-23 | Abernethy Robert R | Edge deformable lock nut |
US4150702A (en) * | 1978-02-10 | 1979-04-24 | Holmes Horace D | Locking fastener |
US4432682A (en) * | 1978-12-04 | 1984-02-21 | Microdot Inc. | Threaded fastener assembly |
US4741654A (en) * | 1986-05-01 | 1988-05-03 | Industrial Fasteners Corp. | Spider washer head fasteners |
US4810149A (en) * | 1987-09-17 | 1989-03-07 | Lee Jae B | Screw-type fastening device |
US4850775A (en) * | 1988-04-26 | 1989-07-25 | Lee Jae B | Screw-type fastening device |
WO1989011044A1 (fr) * | 1988-05-09 | 1989-11-16 | Takuya Mikajiri | Vis bloquante |
US4983084A (en) * | 1989-09-26 | 1991-01-08 | Northrop Corporation | Double locked threaded fastener |
-
1991
- 1991-07-25 US US07/735,435 patent/US5259715A/en not_active Expired - Fee Related
-
1992
- 1992-07-08 DE DE59201396T patent/DE59201396D1/de not_active Expired - Fee Related
- 1992-07-08 AT AT92111604T patent/ATE118604T1/de not_active IP Right Cessation
- 1992-07-08 ES ES93108231T patent/ES2079919T3/es not_active Expired - Lifetime
- 1992-07-08 EP EP92111604A patent/EP0524489B1/fr not_active Expired - Lifetime
- 1992-07-08 AT AT93108231T patent/ATE128524T1/de not_active IP Right Cessation
- 1992-07-08 ES ES92111604T patent/ES2069352T3/es not_active Expired - Lifetime
- 1992-07-08 DE DE59203847T patent/DE59203847D1/de not_active Expired - Fee Related
- 1992-07-08 EP EP93108231A patent/EP0568106B1/fr not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1914477A1 (de) * | 1967-04-14 | 1971-01-07 | Burdsall & Ward Co | Gewindeverbindung,insbesondere Sicherungsschraube |
DE1903068A1 (de) * | 1968-01-31 | 1970-08-06 | Reed Rolled Thread Die Co | Selbstverriegelnde Schrauben und Gewindeschneider zur Herstellung derselben |
DE2645519A1 (de) * | 1975-10-08 | 1977-04-21 | Holmes Horace D | Selbsthemmendes gewinde |
US4586861A (en) * | 1978-11-06 | 1986-05-06 | Microdot Inc. | Convex wedge ramp thread configuration |
EP0065344A1 (fr) * | 1981-05-11 | 1982-11-24 | Microdot Inc. | Dispositif de fixation à taraudage |
CH650842A5 (fr) * | 1982-01-11 | 1985-08-15 | Illinois Tool Works | Organe de fixation filete. |
EP0441224A1 (fr) * | 1990-02-09 | 1991-08-14 | Anton Prof. Dr. Härle | Taraudage auto-blocant |
Also Published As
Publication number | Publication date |
---|---|
US5259715A (en) | 1993-11-09 |
ATE118604T1 (de) | 1995-03-15 |
ATE128524T1 (de) | 1995-10-15 |
ES2069352T3 (es) | 1995-05-01 |
EP0524489B1 (fr) | 1995-02-15 |
EP0524489A1 (fr) | 1993-01-27 |
DE59203847D1 (de) | 1995-11-02 |
ES2079919T3 (es) | 1996-01-16 |
DE59201396D1 (de) | 1995-03-23 |
EP0568106B1 (fr) | 1995-09-27 |
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